Please Search Prior To Posting!

There are many applications already listed. In all likelihood, this includes the one you are thinking of. Please check the existing answers to avoid duplicates, and the resulting cleanup it necessitates.

To search, use the search box in the upper-right corner. To search the answers of the current question, use inquestion:this. For example:

inquestion:this Evernote

If it hasn't already been posted, please follow a few simple rules when adding it as an answer.

Rules

Limit to one application per answer.

Add a short description of the application.

Add a link to the website in the name of the application if possible (no direct downloads).

Use ## [appName](link) for citing the application name.

Only Mac OS X (not iOS, OS 9, compatible, etc) applications. All versions of OS X are accepted, but if the application requires a specific version please note.

This question exists because it has historical significance, but it is not considered a good, on-topic question for this site, so please do not use it as evidence that you can ask similar questions here. This question and its answers are frozen and cannot be changed. More info: help center.

15

Voted to close — a good question, but we really should avoid subjective ones here.
–
apostlionAug 17 '10 at 20:19

19

@Apostlion: Simply because it's subjective does not mean it can't be answered. There are (community defined) "good" applications that are useful on a daily basis.
–
Josh KAug 17 '10 at 20:22

27

Voted to reopen - it is subjective, but a popular and useful style of question, if kept as a wiki and not repeated too much. These questions are mostly accepted on gadgets.stackexhange.com for example.
–
Jon HadleyAug 17 '10 at 21:08

10

Can we make this Community Wiki? And also 1 app per answer? Much easier to check if something has already been said and to edit to add information about said app. Thank you.
–
Loïc WolffAug 19 '10 at 20:39

11

I did a lot of cleanup. Changed all the app names to ## (because it was the most commonly used in the existing answers. Moved links so that they were within the app names. Removed some first-person descriptors.
–
Robert S CiaccioAug 23 '10 at 3:18

239 Answers
239

In Mac OS 10.6 disk and file sizes are measured in base 10 (one kilobyte is defined as 1000 bytes, one megabyte is defined as 1000 kilobytes, etc.) in Finder and Disk Utility. Unfortunately this has created a lot of inconsistency even when working with Apple’s own programs since most of them still define file sizes in binary units (one kilobyte is defined as 1024 bytes, one megabyte is defined as 1024 kilobytes, etc.). This utility will switch the measurement of disk and file sizes in both Finder and Disk Utility back to binary units (or if the measurement has already been switched to binary units it will restore the system back to using base 10 units).

After the switch in Snow Leopard I never could get used to read file sizes in Finder with base-10. This application patches the Foundation framework in order to get back base-2 units. I can now again compare disk space and file sizes with other operating systems or output from shell tools.

I use it mostly to rate songs and get Growl to display the currently playing song. From the website:

iMote is a simple, elegant, and lightweight program for controlling iTunes from just about any application. Play/pause, change tracks, select playlists, adjust volume, rate tracks, and more using fully customizable hot-keys or a universal menu bar item. iMote includes a beautiful iPod-esque floating window, indicating current track information, and Growl support if you want an even more streamlined experience with your other Growl-enabled applications. Written using Cocoa, iMote is lean and mean, consuming minimal system memory and CPU time. iMote is the original iTunes controller.

One of the few RSS readers that doesn't try to imitate an e-mail application, News Anchor converts inanimate text in news feeds into lively television-like news broadcasts. With News Anchor you can now "read" news feeds while eating or doing other things.

Spark is a powerful, and easy Shortcuts manager. With Spark you can create Hot Keys to launch applications and documents, execute AppleScript, control iTunes, and more...
You can also export and import your Hot Keys library, or save it in HTML format to print it.
Spark is free, so use it without moderation!

App Bar displays a quick list of all your applications. This is the quickest way possible to find and open any application launched from your Status Bar or Dock. All apps are listed alphabetical and the scroll list is well laid out and always just a click away.

JiTouch is similar to BetterTouchTool, but with many, many more options. The one thing it doesn't have is Windows 7 snapping, so keep BetterTouchTool around for that. I would highly recommend this application, though it's a paid application.

iProcrastinate is the ideal task manager for anyone who doesn't want their todo list to get in the way of actually getting things done! Great for anyone who is looking for a mobile, easy-to-use task manager. (Not just for students!) Add birthdays, soccer practice and conference calls, all without missing a beat.

Uses iCloud to sync between Mac and iOS. Couldn't do my homework without it.

Hub List tries to strike a balance between simplicity and
customization. If you’ve every managed a software project then you’ve
probably spent more time then you care to admit inside an ugly bug
tracking application that a bunch of developers convinced you would
make them more productive. You probably use another app to manage your
business projects and then something else to help you remember all
those pesky personal todos like getting your mom a card for mother’s
day. Rather than try to replace all those tools Hub List strives to
provide real-time two-way integration with all of them so you can be
more productive using the tools you already have.

CCleaner is the no. 1 cleaning utility for Windows PC. In Mac it does the same function, cleaning temp files, cookies, cache etc. for making more space available. The tools section provides utilities to uninstall an application, change startup option, erase free space and manage permissions.

After last year Sparrow acquisition from Google and development freeze, Airmail is new, actively developed mail client. It does not hide it's Sparrow roots, but exceeds it and new features are constantly added.

Best text editor ever...Supports VIM bindings plus has org-mode and can run a shell, edit directories, view images, etc. Make sure to use the built-in package manager to load add-ons. Solarized-dark is an excellent color scheme.

I use it as my daily productivity booster since it moves all files I haven't touched within the last week from my Desktop into my archive. It has many more features you may find interesting. Here is a trailer.

There's a software version as well as the hardware box that creates a cloud server. The software version allows me to set a folder or drive on my Mac and link to it so I can let others access. I know there are other ways to do this, but for me the $20 ($30 now, I think) was well spent as the software is simple and no glitches.

If you have a good friend and you both agree to leave your computers running, you can use the other's extra drive to store your backup with no monthly fee, just install a decent size drive at the friend's house.

"Often you don't need the exact time in hours, minutes and seconds. A more human readable style like "five past ten" makes more sense. For that, you can now use FuzzyClock. FuzzyClock is a menubar clock which displays the current time in a "fuzzy" style." I use the handwriting font. (Alfred, Cloudapp and Growl have been said).